LU-13569 lnet: Add lnet_recovery_limit to lnetctl

[fs/lustre-release.git] / lnet / utils / lnetconfig / liblnetconfig.c

diff --git a/lnet/utils/lnetconfig/liblnetconfig.c b/lnet/utils/lnetconfig/liblnetconfig.c
index c584c1d..a5a3eeb 100644 (file)
--- a/lnet/utils/lnetconfig/liblnetconfig.c
+++ b/lnet/utils/lnetconfig/liblnetconfig.c
@@ -2421,6 +2421,36 @@ int lustre_lnet_config_response_tracking(int val, int seq_no,
        return rc;
 }
 
+int lustre_lnet_config_recovery_limit(int val, int seq_no,
+                                     struct cYAML **err_rc)
+{
+       int rc = LUSTRE_CFG_RC_NO_ERR;
+       char err_str[LNET_MAX_STR_LEN];
+       char val_str[LNET_MAX_STR_LEN];
+
+       if (val < 0) {
+               rc = LUSTRE_CFG_RC_BAD_PARAM;
+               snprintf(err_str, sizeof(err_str),
+                        "\"Must be greater than or equal to 0\"");
+       } else {
+               snprintf(err_str, sizeof(err_str), "\"success\"");
+
+               snprintf(val_str, sizeof(val_str), "%d", val);
+
+               rc = write_sysfs_file(modparam_path, "lnet_recovery_limit",
+                                     val_str, 1, strlen(val_str) + 1);
+               if (rc)
+                       snprintf(err_str, sizeof(err_str),
+                                "\"cannot configure recovery limit: %s\"",
+                                strerror(errno));
+       }
+
+       cYAML_build_error(rc, seq_no, ADD_CMD, "recovery_limit", err_str,
+                         err_rc);
+
+       return rc;
+}
+
 int lustre_lnet_config_max_intf(int max, int seq_no, struct cYAML **err_rc)
 {
        int rc = LUSTRE_CFG_RC_NO_ERR;
@@ -3511,6 +3541,31 @@ int lustre_lnet_show_response_tracking(int seq_no, struct cYAML **show_rc,
                                       show_rc, err_rc, l_errno);
 }
 
+int lustre_lnet_show_recovery_limit(int seq_no, struct cYAML **show_rc,
+                                   struct cYAML **err_rc)
+{
+       int rc = LUSTRE_CFG_RC_OUT_OF_MEM;
+       char val[LNET_MAX_STR_LEN];
+       int recov_limit = -1, l_errno = 0;
+       char err_str[LNET_MAX_STR_LEN];
+
+       snprintf(err_str, sizeof(err_str), "\"out of memory\"");
+
+       rc = read_sysfs_file(modparam_path, "lnet_recovery_limit", val,
+                            1, sizeof(val));
+       if (rc) {
+               l_errno = -errno;
+               snprintf(err_str, sizeof(err_str),
+                        "\"cannot get lnet_recovery_limit value: %d\"", rc);
+       } else {
+               recov_limit = atoi(val);
+       }
+
+       return build_global_yaml_entry(err_str, sizeof(err_str), seq_no,
+                                      "recovery_limit", recov_limit,
+                                      show_rc, err_rc, l_errno);
+}
+
 int lustre_lnet_show_max_intf(int seq_no, struct cYAML **show_rc,
                              struct cYAML **err_rc)
 {
@@ -4498,7 +4553,8 @@ static int handle_yaml_config_global_settings(struct cYAML *tree,
                                              struct cYAML **err_rc)
 {
        struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
-                    *sen, *recov, *rsen, *drop_asym_route, *rsp_tracking;
+                    *sen, *recov, *rsen, *drop_asym_route, *rsp_tracking,
+                    *recov_limit;
        int rc = 0;
 
        seq_no = cYAML_get_object_item(tree, "seq_no");
@@ -4572,6 +4628,13 @@ static int handle_yaml_config_global_settings(struct cYAML *tree,
                                                        : -1,
                                                     err_rc);
 
+       recov_limit = cYAML_get_object_item(tree, "recovery_limit");
+       if (recov_limit)
+               rc = lustre_lnet_config_recovery_limit(recov_limit->cy_valueint,
+                                                      seq_no ? seq_no->cy_valueint
+                                                       : -1,
+                                                      err_rc);
+
        return rc;
 }
 
@@ -4619,7 +4682,8 @@ static int handle_yaml_show_global_settings(struct cYAML *tree,
                                            struct cYAML **err_rc)
 {
        struct cYAML *max_intf, *numa, *discovery, *retry, *tto, *seq_no,
-                    *sen, *recov, *rsen, *drop_asym_route, *rsp_tracking;
+                    *sen, *recov, *rsen, *drop_asym_route, *rsp_tracking,
+                    *recov_limit;
        int rc = 0;
 
        seq_no = cYAML_get_object_item(tree, "seq_no");
@@ -4684,6 +4748,13 @@ static int handle_yaml_show_global_settings(struct cYAML *tree,
                                                        -1,
                                                        show_rc, err_rc);
 
+       recov_limit = cYAML_get_object_item(tree, "recovery_limit");
+       if (recov_limit)
+               rc = lustre_lnet_show_recovery_limit(seq_no ?
+                                                    seq_no->cy_valueint :
+                                                    -1,
+                                                    show_rc, err_rc);
+
        return rc;
 }